99146391 has 8 divisors (see below), whose sum is σ = 132303360. Its totient is φ = 66043512.

The previous prime is 99146387. The next prime is 99146407. The reversal of 99146391 is 19364199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99146391 - 2² = 99146387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99146321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9031 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (16537920).

Almost surely, 2^99146391 is an apocalyptic number.

99146391 is a deficient number, since it is larger than the sum of its proper divisors (33156969).

99146391 is a wasteful number, since it uses less digits than its factorization.

99146391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27045.

The product of its digits is 52488, while the sum is 42.

The square root of 99146391 is about 9957.2280781350. The cubic root of 99146391 is about 462.8344068976.

The spelling of 99146391 in words is "ninety-nine million, one hundred forty-six thousand, three hundred ninety-one".